I think it's time for a new sensor. The local VW dealership told me $111, and Autozone said $90 but they'd price match (Presumably only local stores, though). 1stvwparts.com appears to be down. Any deals out there?
Ironically, in the middle of typing this, I found alocal stopre called Central Auto Parts which is affiliated with CarQuest. Bosch 0258007057 for $44.